K20 – Honda Civic Type R, Integra & Accord Head Gasket Keychain
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K20 – Honda Civic Type R, Integra & Accord Head Gasket Keychain

Sale price£20.00

This stainless-steel head gasket keychain celebrates the Honda K20A, K20A2 and K20Z1 naturally aspirated performance engines. These 2.0-litre DOHC i-VTEC inline-fours belong to the same 86 mm-bore, PRB-cylinder-head family, making them the correct grouped application for this gasket-profile design.

Engine Identity

  • Manufacturer: Honda Motor Co., Ltd.

  • Engine codes: K20A, K20A2 and K20Z1.

  • Configuration: Transverse, naturally aspirated inline-four petrol engine.

  • Cylinder count: Four.

  • Displacement: 1,998 cc / 2.0 litres.

  • Production period: K20A and K20A2 performance applications: 2001–2005/06; K20Z1: 2005–2006.

  • Valvetrain: DOHC, 16 valves, chain-driven i-VTEC.

  • Fuel system: Electronic multipoint port fuel injection.

  • Bore x stroke: 86.0 x 86.0 mm.

The K20A, K20A2 and K20Z1 use the high-performance PRB cylinder-head family. A specialist K-series technical guide identifies the JDM EP3/DC5 K20A, RSX Type-S K20A2 and RSX Type-S K20Z1 as PRB-head engines, and documents the K20A2/K20Z1 gasket bore as 86 mm.

Vehicle Compatibility Matrix

Engine code Vehicle Chassis / market Production years Factory output
K20A Honda Civic Type R EP3, Japan 2001–2005 215 PS at 8,000 rpm.
K20A Honda Integra Type R DC5, Japan 2001–2006 215–220 PS at 8,000 rpm, depending on model year. 
K20A Honda Accord Euro R CL7, Japan 2002–2006 Up to 220 PS at 8,000 rpm.
K20A2 Honda Civic Type R EP3, UK and Europe 2001–2005

200 PS at 7,400 rpm.
K20A2 Acura RSX Type-S DC5, North America 2002–2004 200 hp at 7,400 rpm.
K20Z1 Acura RSX Type-S DC5, North America 2005–2006 210 hp at 7,800 rpm. 

The K20A designation covers more than one Japanese-market engine calibration, so output figures must be tied to the exact vehicle and year. This product family is specifically for the high-performance K20A Type R applications listed above, not every non-Type R engine labelled simply “K20A”.

Why This Engine Matters

Honda used the K20A in the DC5 Integra Type R and EP3 Civic Type R to continue its naturally aspirated, high-revving front-wheel-drive performance formula. These engines use i-VTEC, a chain-driven DOHC valvetrain and an 86.0 mm square bore-and-stroke layout, producing their strongest power high in the rev range.

The European EP3 K20A2 produced 200 PS at 7,400 rpm, while the later North American DC5 RSX Type-S K20Z1 increased output to 210 hp at 7,800 rpm. Japanese-market K20A Type R applications reached up to 220 PS, depending on the model and year.

Technical Specifications

Specification K20A Type R reference K20A2 K20Z1
Capacity 1,998 cc / 2.0 litres.  1,998 cc / 2.0 litres.  1,998 cc / 2.0 litres. 
Configuration Naturally aspirated inline-four. Naturally aspirated inline-four. Naturally aspirated inline-four. 
Cylinder head DOHC i-VTEC, 16 valves. DOHC i-VTEC, 16 valves.  DOHC i-VTEC, 16 valves.
Bore x stroke 86.0 x 86.0 mm.  86.0 x 86.0 mm. 86.0 x 86.0 mm.
Compression ratio 11.5:1 in the cited 215 PS K20A reference; later JDM versions are reported at 11.7:1 11.0:1 Varies by reference; confirm by OEM manual for a specific vehicle.
Fuel system PGM-FI multipoint injection.  PGM-FI multipoint injection. PGM-FI multipoint injection. 
Timing drive Timing chain.  Timing chain. Timing chain. 
Peak power 215–220 PS at 8,000 rpm, market/year dependent. 200 PS / hp at 7,400 rpm. 210 hp at 7,800 rpm. 
Peak torque 206–215 Nm, depending on K20A version. Model-year and market dependent; commonly quoted around 193 Nm. Model-year and market dependent; confirm by RSX Type-S year.
Head-gasket bore 86 mm K20 performance gasket family. 86 mm. 86 mm.

The documented 86 mm gasket bore is important: it distinguishes the K20A/K20A2/K20Z1 grouping from K24 engine applications, which require an 87 mm-bore gasket when a PRB K20 head is fitted to a K24 block. Aftermarket gaskets may be made with larger bore diameters for modified engines, so bore size alone should not be used to identify a vehicle’s original service gasket.

Product Details

  • Stainless-steel head gasket keychain inspired by the Honda K20A / K20A2 / K20Z1 PRB-family head-gasket profile.

  • Designed for owners and enthusiasts of the EP3 Civic Type R, DC5 Integra Type R and Acura RSX Type-S.

  • Represents the naturally aspirated 2.0-litre, 16-valve i-VTEC K20 performance family with an 86 mm cylinder bore.

  • Finished using our three-stage vibratory polishing process for a smooth, durable metal finish.

  • Supplied on a plywood display card for gifting, collecting or display.

FAQ

Which engines does this K20 keychain represent?

This keychain represents the naturally aspirated Honda K20A Type R, K20A2 and K20Z1 engine group. These engines are identified as sharing the PRB-head family and an 86 mm K20 gasket-bore application.

Which cars use the K20A, K20A2 and K20Z1?

The K20A was fitted to Japanese-market EP3 Civic Type R, DC5 Integra Type R and CL7 Accord Euro R models; the K20A2 was fitted to the European EP3 Civic Type R and 2002–2004 Acura RSX Type-S; and the K20Z1 was fitted to the 2005–2006 Acura RSX Type-S.

Is this the same gasket family as a K24?

Not necessarily. Although K20 PRB cylinder heads are commonly used in K20/K24 hybrid builds, a K24 block has an 87 mm bore and requires a larger-bore gasket; the original K20A2/K20Z1 gasket bore is 86 mm.

Is this a functional replacement head gasket?

No. This is a decorative stainless-steel keychain inspired by the Honda K20A/K20A2/K20Z1 gasket shape; it is not an engine-service component.

Vehicle Fitment: Honda Civic Type R (EP3)

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